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Semantic Analysis of SPARK Text
Examiner Pro Edition, Version 9.1.0, Build Date 20101119, Build 19039
Copyright (C) 2010 Altran Praxis Limited, Bath, U.K.
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CREATED 22-SEP-2011, 11:10:50 SIMPLIFIED 22-SEP-2011, 11:10:51
SPARK Simplifier Pro Edition, Version 9.1.0, Build Date 20101119, Build 19039
Copyright (C) 2010 Altran Praxis Limited, Bath, U.K.
procedure Loop_Invariant.Proc1
For path(s) from start to run-time check associated with statement of line 7:
procedure_proc1_1.
*** true . /* all conclusions proved */
For path(s) from start to run-time check associated with statement of line 8:
procedure_proc1_2.
*** true . /* all conclusions proved */
For path(s) from start to run-time check associated with statement of line 8:
procedure_proc1_3.
*** true . /* all conclusions proved */
For path(s) from start to assertion of line 8:
procedure_proc1_4.
*** true . /* all conclusions proved */
For path(s) from assertion of line 8 to assertion of line 8:
procedure_proc1_5.
H1: a <= 2147483647 .
H2: b >= 0 .
H3: b <= 4294967295 .
H4: loop__1__i >= 1 .
H5: (loop__1__i - 1) * b mod 4294967296 >= 0 .
H6: (loop__1__i - 1) * b mod 4294967296 <= 4294967295 .
H7: ((loop__1__i - 1) * b mod 4294967296 + b) mod 4294967296 >= 0 .
H8: ((loop__1__i - 1) * b mod 4294967296 + b) mod 4294967296 <= 4294967295 .
H9: loop__1__i < a .
H10: integer__size >= 0 .
H11: natural__size >= 0 .
H12: word32__size >= 0 .
->
C1: loop__1__i * b mod 4294967296 = ((loop__1__i - 1) * b mod 4294967296 + b)
mod 4294967296 .
For path(s) from assertion of line 8 to run-time check associated with
statement of line 11:
procedure_proc1_6.
*** true . /* all conclusions proved */
For path(s) from start to finish:
procedure_proc1_7.
*** true . /* all conclusions proved */
For path(s) from assertion of line 8 to finish:
procedure_proc1_8.
H1: a <= 2147483647 .
H2: b >= 0 .
H3: b <= 4294967295 .
H4: a <= 2147483647 .
H5: a >= 1 .
H6: (a - 1) * b mod 4294967296 >= 0 .
H7: (a - 1) * b mod 4294967296 <= 4294967295 .
H8: ((a - 1) * b mod 4294967296 + b) mod 4294967296 >= 0 .
H9: ((a - 1) * b mod 4294967296 + b) mod 4294967296 <= 4294967295 .
H10: integer__size >= 0 .
H11: natural__size >= 0 .
H12: word32__size >= 0 .
->
C1: a * b mod 4294967296 = ((a - 1) * b mod 4294967296 + b) mod 4294967296 .
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